permissions

Permission on files/folder(directory):

by using ls -la we can view permissions on file directory, link

  • why do we need to understand file/directory permissions in Linux as cybersecurity student?
    it helps u understand targets file/folder permissions and it is used for Pen-testing when we need to Read , Write, Execute files on target machine.
  • By default some executable files are in read/write mode only we have to change there Rights to Execute them.
    Pasted image 20250618212339.png

#resources/linux/users

/tmp folder can be used to have full permissions

permissions Types (Chmod)

numeric 2= read 4= write 1=execute 
example chmod +337
owner can read and excute 1+2 =3
user group can read and execute 1 + 2 =3
other users can read,write and execute 1+2+4 =7 
(337)

character based 
write=w execute=x  r=Read

example:
chmod +rwx file.txt => owner will have read,write and execute permission